Ferric alum gives red color with $N H_{4} S C N$ due to formation of:

A l {(S C N)}_{3}

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F e S O_{4}

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F e {(S C N)}_{3}

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F e {(S C N)}_{2}

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Solution

The correct option is B $F e {(S C N)}_{3}$
Ferric atom has $F e^{3 +}$ ion which on reaction with $N H_{4} S C N$ gives red color due to formation of the $F e (S C N)_{3}$ . When in contact with $F e^{3 +}$ ion solution in ferric alum solution the product of the reaction is a solution with a blood red colour, due to the formation of the thiocyanato iron complex $F e (S C N)_{3}$ .

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Similar questions

During the formation of ferric thiocyanate and potassium nitrate from ferric nitrate and potassium thiocyanate, the red color is due to the formation of

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If true enter 1, else enter 0.

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Ferric alum gives red color with NH4SCN due to formation of:

Ferric alum gives red color with $N H_{4} S C N$ due to formation of: